There one very easy way to start using Font Awesome 6. And that is to cut and paste this CSS link below somewhere inside the<head>of your HTML document:
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v6.7.2/css/all.css">
In fact, we recommend including it before the link to your regular external stylesheet.
Then, when you want to use an icon, you simply use the correct icon code.
For example, the code below produces this icon:
<i class="fa-solid fa-car-side" style="font-size:32px;color:navy;"></i>